From 68583f4d488578814403e0719926ae3603d43ce6 Mon Sep 17 00:00:00 2001 From: Marco Costalba Date: Sun, 7 Aug 2011 15:15:19 +0100 Subject: [PATCH] Fix obey the "maxThreadsPerSplitPoint" setting Spotted by Joona. Signed-off-by: Marco Costalba --- src/thread.cpp | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/src/thread.cpp b/src/thread.cpp index e1330396..24fbebc0 100644 --- a/src/thread.cpp +++ b/src/thread.cpp @@ -281,26 +281,26 @@ Value ThreadsManager::split(Position& pos, SearchStack* ss, Value alpha, Value b // If we are here it means we are not available assert(masterThread.state == Thread::SEARCHING); - int booked = 0; + int workersCnt = 1; // At least the master is included // Try to allocate available threads setting state to Thread::BOOKED, this // must be done under lock protection to avoid concurrent allocation of // the same slave by another master. lock_grab(&threadsLock); - for (i = 0; !Fake && i < activeThreads && booked < maxThreadsPerSplitPoint; i++) + for (i = 0; !Fake && i < activeThreads && workersCnt < maxThreadsPerSplitPoint; i++) if (i != master && threads[i].is_available_to(master)) { threads[i].state = Thread::BOOKED; threads[i].splitPoint = &splitPoint; splitPoint.is_slave[i] = true; - booked++; + workersCnt++; } lock_release(&threadsLock); // We failed to allocate even one slave, return - if (!Fake && !booked) + if (!Fake && workersCnt == 1) return bestValue; masterThread.activeSplitPoints++; -- 2.39.2